I seem to have derailed this thread. Apologies for that.
@ rockouthippie, most people who take the attitude that Schmeet speaks of are either not parents themselves or are of the ilk that they find natural feeding sort of unnatural? Yet again a result of what I said previously.
Some people take it so far to be 'right on' that they'll carry on feeding their kids way past age 2 when there are no nutrients left, it's just to prove a point. (one I don't fall into agreement with)
Now, as I said before, I only know about UK-based things but until about the early 20th century here we had no National Health or benefits or welfare and also The Depression, a lot of mothers did breastfeed their children up until age 4 or so just so they could get something into their stomachs. There was no food.
Breastfeeding is also a (not wholly reliable) contraceptive so in Catholic families in particular it was a way to prevent yet another child arriving. The mortalilty rates were dire in any case but it was one more method to 'help'.
edit/ as you posted while I was typing. "My sister has a very nice figure." you are more likely to get your figure back BY breastfeeding because that's why your body stored the fat. You'd have more trouble to get rid of the flab if you used formula. Says me at 6 foot nearly 2 inches and not quite 120 pounds. What's formula?